Data last collected:
PowerPlantFactsEvidence report · prepared 19 October 2026https://powerplantfacts.com/entity/489
EIA plant 489
La Grange · Tuolumne · CA
Upper Dawson
Operated by Turlock Irrigation District
Published location
Where is Upper Dawson?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
37.650800, -120.470600
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Capacity is not generation. Nameplate MW describes equipment; annual MWh describes recorded output. Proposed and retired units are not added to operating capacity.
Equipment mix
Operating capacity by technology
Grouped from this plant’s represented generator records. Use the CA plant index for regional peers.
See the evidence
Electricity output across the year
Monthly net generation shows the seasonal shape of this plant's represented output. A negative value is retained when the source reports net consumption.
1191
2428
3477
4932
51,414
61,706
72,055
81,499
9979
101,015
11-2
12-2
MWh net generation · 2024 final edition · EIA 923 represented operating rows. 12 of 12 supplied rows shown; 0 missing values omitted. Months with no reported numeric value are omitted, not treated as zero.
Read the chart as a table
| Record | MWh net generation |
|---|---|
| 1 | 191 |
| 2 | 428 |
| 3 | 477 |
| 4 | 932 |
| 5 | 1,414 |
| 6 | 1,706 |
| 7 | 2,055 |
| 8 | 1,499 |
| 9 | 979 |
| 10 | 1,015 |
| 11 | -2 |
| 12 | -2 |
2024 monthly net generation
| Month | Net generation |
|---|---|
| 1 | 191 MWh |
| 2 | 428 MWh |
| 3 | 477 MWh |
| 4 | 932 MWh |
| 5 | 1,414 MWh |
| 6 | 1,706 MWh |
| 7 | 2,055 MWh |
| 8 | 1,499 MWh |
| 9 | 979 MWh |
| 10 | 1,015 MWh |
| 11 | -2 MWh |
| 12 | -2 MWh |
Operating generators
| ID | Technology | Fuel | MW | Status |
|---|---|---|---|---|
| 1 | Conventional Hydroelectric | WAT | 4.4 | OP |
Continue exploring
Similar-capacity plants in the same state
Identity, technology and limitations
EIA plant ID
489
Sector
Electric Utility
Water source
Upper Turlock Main Canal
Data edition
2024-final
Use this record
Questions this evidence can answer
01What exactly is this record?
Use the name, place, date and identifiers above to confirm that you have the right Upper Dawson power plant: capacity and generation | PowerPlantFacts record.
02What does the evidence establish?
Read the reported values with their units, coverage dates and source notes. Keep observed facts separate from estimates or interpretation.
03What should I verify next?
Follow the primary-source links and check the limitations before using this evidence for a decision, comparison or citation.
A closer look at Upper Dawson
Variation in the published months
Across 10 numeric monthly generation entries, 7 has the highest recorded value (2,055 MWh) and 1 the lowest (191 MWh). Their difference is 1,864 MWh. Missing months have not been treated as zero.
Generator capacity in different operating conditions
| Generator ID | Technology | Nameplate MW | Summer MW | Winter MW | Minimum load MW |
|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | 4.4 | 5.5 | 5.5 | 0.6 |
EIA-860 2024 final source. Ratings describe capacity, not actual generation or availability. Missing ratings are not zero.
Source: US Energy Information Administration Form EIA-860 2024 plant and operable-generator workbooks; archive 2024. US EIA-authored information is generally public domain; cite EIA, preserve third-party exceptions, changes and no-endorsement context. Source-specific derived data.